From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specifications and details for Lucas Motor A880.
| Identifier | ExFiles\Box 51\5\ Scan069 | |
| Date | 15th December 1921 | |
| RR. 238. (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No P.B.32 Customer's No. X 4342 L Dec. 15th 1921 Details of Lucas Motor A880 Carcase diameter. 4.500" " length. 4.350" " thickness. .325" Armature diameter. 3.003" " active length. 2.600" Weight of machine complete. 17.5 lbs. " " armature including driving end-plate and bearing. 8.3 lbs. Air gap .015" .38 m {Mr Moon / Mr Moore} /m. Number of wound poles. 4. Arrangement of coils. All in series. Resist. of field circuit. .0088 ohm at 18°C Number of armature slots. 29. " " cons. bars. 29. Armature resistance. .0098 ohm at 18°C. Commutator diameter. 1.375" " useful length. .700" Brush contact area 2x .50"x .30" = .300 sq" Signed Cont'd. {John DeLooze - Company Secretary} This Sheet must be filed on completion of the work. | ||